Dial-indicator



H. R. GEER.

DIAL INDICATOR.

APPLICATION FILED JAN. 16, 1920.

1,384,802, Patented July 19, 1921.

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. j R. G EK, a citi- 'zen of-the United States, and a resident" of the city of Johnstown, county of ,Cambria, "and-"State of Pennsylvania, have inventedcertain new 'anduseful Improvements in- Dial-Indicators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will en-" able others skilled in the artto which it ap'.-'

- pertains to makeand use the same.

cation.

My invention is an indicating mechanism adapted for use in different arts for the purpose of, visually indicating the adjustment of certain working members.

The invention hereinafter described in connection with a rolling mill having -adjustable vertical rolls is 'for the purpose of visually indicating the adjustment of said vertical rolls. Although particularly adapted to the aboveuse, it is to be distinctly understood that my invention may be used with the horizontal rolls and is not limited to the particular applications mentioned, as it may be used in other connections and arts by those skilled therein without deviating from the intent and purpose of this specifi- The articular object of my invention is toprovide an indicating apparatus by which the operator is able to determine, by a glance at the indicator mechanism, the exact posi-' tion of the rolls in the mill, irrespective of the number of times said rolls may have been adjusted, thus enabling the operator to determine quickly and accurately the next adjustment which should be given to the rolls of a particular mill.

My invention consists essentially of a screw, one end of which is rigidly fixed to the movable roll housing, roll. bearing or other part which is adapted to move backward or forward or reciprocate with the roll, and the other end of said screw is suitably housed in' bearings and carries a similarly threaded nut .or sleeve, each end of which has afiixed thereto a bevel pinion, one of which engages a bevel gear on an outer dial indicator and the other a bevel gear on an inner dial indicator. The indicating mechanism which also includes a stationarypointer is suitably mounted on a fixed bracket attached to one side of the rolling mill or other fixture.

Having thus given a general description of my invention, I will now, in order to MAI.-m'nrca'ron.' I

I r fl et r a n Patented July 19,1921.

2 r ,makeithe" matter more clear, refer to the an- :clamping bracket for holding the end of thescrew rod on the upper end of the vertical roll housing; 4 is a vertical transverse sect onal elevation on an enlarged scale,

through the dialmechanism and attaching brackets takenon the line IV-IV of Fig. 2; F1g. 5 is a longitudinal sectional elevation taken on the line V-V of Fig. 4; and Fig. 6 is an end elevation of the stud upon which the inner or smaller dial is mounted and rotates.

Referring now to the characters of reference on the drawings :1 is the rolling mill in general having the vertical rolls 2 carried in the vertical roll housings 3. The vertical rolls 2 are capable of lateral adjustment by means of the pull-back cylinders 4 and the vertical roll adjusting screws 5. The bevel gears 6 at the upper end of the vertical rolls 2 mesh with the bevel inions 7 which are mounted and slide longitudinally along the shafts 8 that have bearings in the central bearing casting 9 to which is bolted the dial bracket 10.

The dial bracket 10 has the tubular opening 11 containing the bushing 12 and also has the bushing 13 in the-tubular opening in the bracket arm 14 is the operating screw which rotates the metal nut 18, said nut being mounted or cast in the pipe casting 17 in such a way as to revent any motion of one relative to the ot er. To the pipe casting '17 is fastened at one end the bevel pinion 15 and at the other end the bevel pinion 16, the former abutting against the bushing 13 and the latter against the bushing 12.

The annular bevel gear 19 is fastened to the back of the outer dial 29 and is held in mesh with the bevel pinion 15 by the guide 20. The dial bracket 10 has a central annular flange 21, which centers the outer dial 29 in connection with the annular flanged piece 22 attached thereto.

The hollow cap-screw 28 screws into the center of the central annular flange 21 on the dial bracket 10 and serves as an axle for the bevel gear 23, which engages the bevel pinion 16, the bevel gear 23 being retained by the head 27 of the hollow cap-screw 28 and havin fastened to it the inner dial 30.

%he threaded end 26 of the hollow capscrew 28 is slitted and through the hollow thereof asses an expansion bolt 24 with an enlarged end serving to spread the threaded end 26 of the hollow cap-screw 28, thereby securel looking it from turning as the nut 25 is hand 31 is a stationary pointer fastened at the back and to the central part of the dial bracket 10, the pointer projecting over and part way down the outer dial 29 at its highest oint.

T e dial operatin screw 14 passes through a hole 36 in the sp it end 38 of the bracket 32 and is suitably clamped and locked therein by the bolt 37 which sets in an annular groove 36 near the square outer end 40 of the dial operating screw 14. The bracket 32 is bolted to the right-hand vertical roll housing 3 by the bolt 33 passin through the hole 39, the distance piece 34 w ich bears against a boss on the roll housing 3, and thence through the housing.

In brief, the operation of my device is as follows: As the vertical rolls 2 are moved toward or away from each other by the adjusting apparatus, the operating screw partakes of one-half of the total motion, that is,

I it moves by an amount equal to that of the roll to whose housing it is attached, but by suitable thread pitch, gear ratios and dial graduations the dials register at the pointer the total distance between the roll faces.

Owing to the different gear ratios employed in driving the inner and outer dials, the former moves around ten times as fast as the latter and the operator may read his roll face distance in inches on the outer dial or multiples of ten inches on the outer dial, and inches and fractions thereof on the inner dial, which in this case is graduated to read to one-quarter of an inch from zero inches to ten inches. Although my construction is shown to read in inches and fractions there of, it is manifest that anyone skilled in the art could readil devise dials to read in any linear units. T erefore, I do not limit myself to the particular system of screw-thread, gear ratios and graduations shown in the accompanying drawings. I 1 I It is further evident that no matter what the position of the rolls the dial pointer indicates the distance between the roll faces and the operator has not, therefore, any

mental operations of arithmetic to form to know exactly what the roll face distance is, a glance at the dial pointer being sufficient.

Although I have shown and described my invention in considerable detail, I do not wish to be limited to the exact and specific details thereof, as shown and described, but

rawn up tight. The dial indicator.

one end of'said operating screw bein may use such modifications in, substitutions for or equivalents thereof, as are embraced within the scope of my invention, or as pointed out in the'claims.

Havingthus described my inventlon, what I claim and desire to secure by Letters Patent is 1. In a'mechanism with adjustable mem bers, a continuous visual indicating device comprising a fixed pointer, two .rotatable dials and operable means for rotating said dials, one of said dials indicating in linear units the distance apart of said. adjustable members and'the other indicating a fractional partof said distance in the same linearunits and fractional parts thereof.

2. A continuous indicating device for a rolling mill provided with adjustable. rolls, comprising a fixed pointer, two rotatable dials and operable means for rotating said dials, one of said dials indicating in linear units the distance apart of said adjustable rolls and the other indicating a fractional.

part of saiddistance in the same linear units dicate the distance apart of adjustable members, comprising a fixed pointer, a threaded sleeve, inner and outer dials geared to the threaded sleeve, and means for rotating the threaded sleeve, consistin of an o crating screw attached to one of t c said a justable members.

5. A mechanism adapted to visually indi cate the distance apart of a pair of ad'ustable rolls each mounted in a movable ousing of a rolling mill, comprising a fixed pointer, a threaded sleeve, inner and outer dials geared to the threaded sleeve, an operating screw adapted to rotate said threaded sleeve,

attached to the movable housing of oneo said adjustable rolls.

6. The combination with a air of adjustable members, of a fixed pointer and a pair of rotatable dials, a threaded sleeve geared to the rotatable dials, and a screw having longitudinal motion in connection with one of a pair of the adjustable members for rotating the threaded sleeve and rotatable dials.

7. In an indicating mechanism, the combination of a fixed pointer two rotatable dials, a threaded sleeve provlded with gears meshing with gears on the rotatable dials, an o crating screw engaging the thread of the t readed sleeve, and means for reciprocating the operating screw.

8. A continuous visual indicatin device for a rolling mill provided with a justable rolls, each mounted in a movable housing,

comprising a fixed pointer andinner and outer dials, each provided with a gear, a threaded sleeve with gears mounted thereon and meshing with the dial gears, a screw attached to the housing of one 'of'the adjustable rolls for rotating the threaded sleeve, said device continually showing the distance between the roll faces so that adjustments may be made to the rolls for the successive passages of a piece therethrough.

9. A continuous visual indicating devlce for a rolling mill provided with adjustable rolls, comprlsing a stationary pointer, movable inner and outer dials each provide with a gear, a threaded sleeve havin gears meshing with the dial gears aforesai and a screw which is adapted for longitudinal motion in connection with one of the adjustable rolls for engaging the thread of the threaded sleeve for rotating the dials, said indicating device showing at all times the distance apart of said adjustable rolls.

10. The combination with a pair of adjustable rolls each mounted in a movable housing, of a continuous visual indicator comprising a fixed pointer, rotatable dials, a threaded sleeve provided with gears meshing with gears on the rotatable dials, and an operating screw mounted Within the threaded sleeve and attached to one of the movable roll housings whereby it is adapted to rotate d the dials to indicate at all times the distance apart of the adjustable rolls.

In witness whereof I hereunto aflix my signature.

HARRY R. GEER. 

